The Denver Broncos star never mentioned the sex tape in an Instagram post on Thursday -- but the message seems clear ... karma will bite this woman in the ass.

"I believe in God, luck, fate and I believe in karma, that the energy you put out in the world comes back to meet you."

"But life inevitably throws us curve balls, unexpected circumstances that remind us to expect the unexpected. I've come to understand these curve balls are the beautiful unfolding of both karma and current. #lifeisgreat #blessed."